what does amazon use for shipping

what does amazon use for shipping includes its own logistics network known as Amazon Logistics, along with third-party carriers like UPS, FedEx, and USPS. For Fulfillment by Amazon (FBA), Amazon handles packing, labeling, and shipping, choosing the fastest and most cost-effective method based on customer location. For FBM (Fulfilled by Merchant), sellers can choose their preferred shipping providers. Amazon prioritizes quick and reliable shipping to maintain high customer satisfaction and fast Prime delivery times.